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@tutti LEONARD PHLEGER-I, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 94,767, dated September 14, 1869.

To all u lwm it may concern Beit known that I, LEONARD Panneau, of thecity and county of Philadelphia, and State of Pennsylvania, haveinventeda new anduseful Improvement in Steam- Generators and I do herebydeclarethat the following is a full, clear, and exact description of theconstruction and operation of the same, reference being had to the`accompan yin g drawings, and. to the letters of reference A patentedNovember l, 1864. v

The invention consists- First, of a peculiar-formed furnace, composed ofa series of curved tubes, in combination with a series of horizontal andinclined tubes.

Secondly, in securing the ends of the tubes into tubesheets, to whichare connected caps or water-ways, of a novel construction.

Thirdly, in arranging on each side of the tubes stand-pipes, whichconnect atthe upper ends with a steam-drum, so that the ascending steamand water will separate in the drum, by means of shelvespiaced therein,and the water return to the lower series of tubes.

Fourthl y, in forming a steam-generator so as to com- 'bine allthefeatures hereinbefore set forth.

Figure lis a longitudinal section of my improvement in steam-generators.

Figure 2 is an end elevation. l f

Figure 3'is an end vie-w with the caps removed.

The furnace F is composed of a series of` tubes A, which form thegrate-bars, and are curved somewhat in the form ofthe letter U.

The ends of the said tubes A are secured in the tube-sheets S, S1, andS, and connect with a series of inclined andhorizontal tubes, B B B B,by means of cast-iron caps or water-ways, (3,01, G2, and '03, fittedsteam-tight tothe sheets. rIhe saids caps enclose the ends ofthe tubes,and are made semicircular in form, and provided with flanges, throughwhich pass bolts or rivets, for the purpose of securing them to thetube-v sheets.

On each side of the tubes, and at the front end of the generator, areplaced two stand-pipes, S P and S P', the upper parts of which arecurved at right-angles, and provided with, flanges f and f1, for thepurpose of attaching them to the steam-drum D,placed above the tubes.

The tube-sheet S1 is secured tothe stand-pipes SP and S P', andconnectswith them by means of the` openings O and O1. These openings'are covered by means of-the cap G2.

Thestearn-drum I) is made of castor wrought-iron, and of any suitabledimensions. The interior of said drum is provided with shelves, L andL', of different. lengths, and placed one above the other, i'n order tomore eectually separate the steam `and. Watenand prevent foamingunderneath 'the shelf L. And near the front end of drum D are madeIsquare or othershaped openiugs,0'. It is these openings which connectthe steam-drum with the stand-pipes through the necks P and P', the saidnecks being provided with flanges, f2 andf, for securing them to theflanges f and 'lliile front end of thev drum D is connected with'thecentre of the cap C, by means of the return-pipe or bend R P, asshownings. 1 and 2.

The frontpart of the shelf L' extends down, and is curved over theopenings O, so'as to check and prevent the water fromreturning throughthe bend R P.

The tubes A, which form the furnace F, are supported at their rear endby means of the wall W. Im-

' mediately in the rear of this wall, is placed a wall, W,

for deecting the flame and heat (passing between the tubes A) up andaround the tubes B B B B.-

The rear end of the generator rests upon a wall,W*, as shown in iig. 1,and is enclosed by side walls of ordinary construction.

The .upper portion of the tubes B B B B is covered by means of a jacketor shell, J, said jacket being provided with an opening which connectswith a' smokepipe, S T. The rear portion of the drum D'is supported bymeans of a standard, d, which rests upon the upper portion of the jacketJ.

It will readily be seen, that by the peculiar arrangement of the tubesabove described, that a perfect circulation will be maintained in them,whether the combustion be slow or rapid in the furnace, the steam andvwater passing in the direction shown by arrows in iig. 1, that is, fromthe front to the rear end of thetubes, and returning again to the front,from whence it passes to the steam-drum, where the steam and waterseparates, the steam passing to the upper part of the steamdrum in a drystate, and the water dropping and o'wing beneath the plate L to thefront end ofthe drum, where is passes throughthe opening O2, and downthe opposite stand-pipe to the cap or water-way C, from whence it passesinto the tubes A, immediately beneath the fire, and so continues to'passaround and make a perfect circuit of the generator, preventing-'theaccumulation of scale or sediment, and eectuallyovercoming priming or foaming.

A The distribution of the tubes is such that all their outer surfacesare made available as beating-surfaces, so that the ratio of theheating-surface per horse-power is greatly decreased, consequentlygenerators of large `Ior small power can be erected with acomparativelyl preventingleakage of the joints. The front ends of thetubes being riveted to wrought-iron sheets, are not subjectv to injuryor leakage'in expanding orcoutracting.

The generator is simple in all its parts, in order to be accessible incase. of cleaning or repairs,l and the tubes, owingto their smallness ofdiameter, are capable of withstanding a great pressure, hence the dangerof a serious or general explosion is obviated.

Having tij-us described my invention, its construction and operation,

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

, biuation with horizontal 1. The arrangement of the curved tubes A, incomaud inclined tubes B B B B, substantially as and for the purposespecied.

2. The construction and arrangement ofthe caps or water-ways C, G, CZ,and C, placed over the eudsof the tubes A, and secured to thetube-sheets S, S1, and S2; also, the arrangement of the plates p and p',for the purpose of allowing the cap C and tube-sheet Si to slide in andout, as and for the purpose speciedf 3. The construction and arrangementof the returnbend R P, stand-pipes S P and S P[,tube sheet S1, withopenings O and O1, steam-drum D, with shelves L and L', and necks I andP', so as to operate substantially as and for the purpose specified.

In testimony whereof, I have hereunto set my name,

yin the presence of two subscribing witnesses.

LEONARD PHLEGER.

` Witnesses:

ISAAC R. OAKFORD, M. CAMPBELL.

